Calculations for the Specidfic Heat for an Unknown Metal Trial 1 Trial 2 Mass of unknown metal(g) 18.371 18.371 Mass of calorimeter cup(g) 1.891 1.891 mass of calorimeter and water(g) 47.231 46.502 Tempature of boiling water bath (C) 98.50 99.2 Initial tempature of calorimeter water(C) 23.5 23.4 Final Tempature of water and metal(C) 24.8 24.8 Mass of water(g) Tempature change of water(C) (Do not include a negative sign) Heat gained by water (cal) (do not include negative sign) heat lost by metal(cal) (do not include negative sign) tempatire change of metal(C) (do not include negative sign) Specific heat of metal [cal/g. C] Specific heat of metal [J/(g. C)] Average specific heat of metal [J/(g·°C)] Identify the Metal based on the average specific heat in J/(g·°C)
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
Calculations for the Specidfic Heat for an Unknown Metal
| Trial 1 | Trial 2 | |
| Mass of unknown metal(g) | 18.371 | 18.371 |
| Mass of calorimeter cup(g) | 1.891 | 1.891 |
| mass of calorimeter and water(g) | 47.231 | 46.502 |
| Tempature of boiling water bath (C) | 98.50 | 99.2 |
| Initial tempature of calorimeter water(C) | 23.5 | 23.4 |
| Final Tempature of water and metal(C) | 24.8 | 24.8 |
| Mass of water(g) | ||
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Tempature change of water(C) (Do not include a negative sign) |
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Heat gained by water (cal) (do not include negative sign) |
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heat lost by metal(cal) (do not include negative sign) |
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tempatire change of metal(C) (do not include negative sign) |
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Specific heat of metal [cal/g. C] |
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Specific heat of metal [J/(g. C)] |
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